JdbcScannerFactory.java

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package org.apache.doris.jdbc;

import org.apache.doris.jni.spi.JniScanner;
import org.apache.doris.jni.spi.JniScannerFactory;

import java.util.Map;

/** Builds {@link JdbcJniScanner}. BE reaches it as {@code (jdbc, reader)}. */
public class JdbcScannerFactory implements JniScannerFactory {

    /**
     * Named for what it does rather than for the plugin, because the plugin also writes and a
     * factory name has to be unique within its plugin whatever its kind - see the table in BE's
     * jni_plugin_registry.h. One factory serves every database: which dialect a scan speaks is
     * decided per request from the {@code table_type} parameter, not by the factory BE addressed.
     */
    public static final String NAME = "reader";

    @Override
    public String getName() {
        return NAME;
    }

    @Override
    public JniScanner create(int batchSize, Map<String, String> params) {
        return new JdbcJniScanner(batchSize, params);
    }
}